Mechanical movement



H. G. PAPE.

MECHANICAL MOVEMENT.

APPLlcATloN man ocr. 19. lsu.

Pmdsept. 2, 1919.

I TNB commun PLANoGnArIl C0.. WASHINGTON, D.

` UNirEDl srATEs rAirENT oEEIoE.

HERMAN G. PAPE, oF NEW YORK, N. Y., AssIGNoE, BY MESNE ASSIGNMENTS, To. BEAVER MACHINE AND Toon o0., INC., E NEWARK, NEW JERSEY, A conn IEOIIStA'lIOISTv OF NEW `JEIIELSEY.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented Sept. 2, 1919.

y To all whom t may concern.'

Be it known that I, HERMAN G. PAPE, of New York city, in the county and State of New York, have invented a new and useful Mechanical Movement, of which the follow-y ing is a specification.

` The main object of my invention is to provide a simple and efficient mechanical movement in rwhich motion is conveyed from the driving member to the driven member by means of a spring.`

,A feature of my invention is a spring which is wound up in one ydirection to change its length in another` direction.

Another feature is a spring which is wound up bythe driving member to free the driven `member from a stop and then acts to move the driven member.

Other features will be pointed out below. ,In the drawing- F'gure 1, is `an elevation, partlyin section, of a structure embodying my new mel hereinafter described.

Fig. 4: is a partial section on line 4--4 of Fig. 2.

Fig. 5 shows a modification.

Having reference to the drawings, 1 represents the base or body of an electric switch embodying my new mechanical movement. This base 1 is made with a central aperture within which is journaled the lower end of a stem 2 that is provided at its upper end with a thumb piece or head 3 `by means of which said stem is manually rotated. The stem is locked in position against endwise displacement relatively to base 1 by a washer or keyl occupying a groove provided at the lower-end of said stem. Fitted into a countersink provided upon the top side of base 1 is -a stop plate 5, Fig. 3, made with two threaded holes through it to receive two screws 6 `by means of which said plate is fastened in position within said countersink.

Stop plate 5 is made with two tongues 7 spaced 180 apart andy having their free g toan arm 13 projecting from stem 2.

When the stem 2'is rotated in the direction of the arrow, Fig. 2, the tooth 9 engages one of the stop shoulders 8 thus preventing the rotation of the member 10 with the result that spring l2 is wound up. As the spring is wound up its length in the direction of its axis sh'ortens and since the upper end thereof is anchored to the arm 13, the lower end of the `spring will be drawn upward carrying with it the member 10 and lifting the tang or tooth 9 toward the top of shoulder 8. By the time the end of this tang or tooth reaches the top of shoulder 8 the spring is wound up to such an extent that as soon as` tooth 9 clears shoulder 8 said spring rotates mem ber 10 quickly, and with a snappy movement, in the direction of the arrow, carrying the tooth 9 around to the opposite shoulder S by which its further movement, is arrested. The partial unwinding movement of the spring permitted by the freeing of tooth 8 lengthens the spring sufficiently to cause said tooth to engage said opposite shoulder 8. Thus if the rotation of stem 2 in the direction of the arrow is prolonged or continued the member 10 would intermittently move in the same direction, that is, step by step, making one half of a revolution at each step movement.

In the drawings I have shown the tooth 9 as extending down through a hole 14.- provided `in a contact member or bridge piece 15 loosely mounted to swing on stem 2 between member 10 and stop plate 5. This bridge piece has its ends bent so as to be relatively o'set to adapt them to coperate with two the stopshouldersS Vso that they kare enseY gaged and bridged by Vbridge piece 15 to close a'circuit only When tooth i9 is in en gagement with one of said .stop shoulders 8 and are left disconnectedk so as to open the circuit when said tooth is in engagement With the opposite stop shoulder 8;

In Fig. 5 the stem extends througha'slot' 17 provided in the actuated member 10a4 which, inthis instance, is a flat plate of metal made also With an arm 18 coperating With four stops 19 projecting from va base 1a. A coiled spring 12e surrounding the stem 2 immediately above memberl'Oa has its upper end thereof fastenedV to said. stem and its lower end fastenedY to the arm 18 neark the free end thereof. lllVhen the stem 2 is rotated in the direction of the arroW, Fig. 5,

the s`pring12a'is Wound up and at the same time the lovver extremity'thereof is drawn toward stem'2; carrying member 10 With it. Member 10acontinues to be thusdrawn in- Whereupon the spring 12a swings said inem# ber around stem 2 in the direction ofthe arrovv. i As Vthe member 10a` thus moves around said'stem the unvvinding of the spring 12a shovesl said member outwardly so that it strikes and is arrested by,l theneXt stop 19.

Each stop 19 has projecting from it a. spring latch 20 Which preventsbackvvard movement of member 10a.

What I claim is:

- 1'. A.mechanical movement comprisinga driving member; a driven member; and. a spring stressed in one direction by the drivingmemberr to change the length of the spring in another directiomsaidspring ac- *tuating the driven member.

,2., A mechanical movement comprising A a driving member; a driven member; a stop normally holding the driven member against movement; and a spring connecting said members, said spring being stressed by the driving member and acting when so stressed to free the driven member from the stopV and move the driven member.

3. A mechanical movement comprising a rotatable driving member; a rotatable driven member; astop normally holding the driven member against rotation; fand a spring connecting said members, said spring being stressed by rotation of thek driving memberalone and acting When so stressed'to free the driven memberfrom the st op and rotate the driven member. j Y

4. A mechanical movement comprising a rotatable driving member; a rotatable Vdriven member; a stop normally hold/ing the'driven Y member against rotation; and ka coiled spring connecting said members, said spring contraction to free the y,driven member'V from the stop and rotate the driven member.

5. A mechanical movement comprising a rotatableY driving member; a rotatable'driven member; a stop normally holding the driven member-against rotation; and a coiled spring connected at one end With .said driving' Y member and at its opposite end Withus'aid driven member, rotation of Vsaid driving member acting to Wind up the spring andi* at the same time shorten the length thereof to free the driven member from said stop to permit the spring to rotate said drivenmem.-

, jeeVV 6. YArmechanicalv movement comprising a` Y driving member consisting of a` rotatably supported stem; a driven member .rotatably -i supported by said stem; a spring surround-y 1 ing said stem and having one end connected with saidstem and the other end With said driven member; a fiXed stopnormally holdtated to free the driven member from the i ing the driven member against rotation, said g Wardly as the stem is rrotated until its outer" end clears the stop 19 against which it rests stop and rotate said member, the unWinding Y of said spring when it rotates said memberV causingsaid driven member to move to, Shop engaging position. a i

7- A' mechanical movement comprising a driving member consisting of a rotatablysupported stem; a driven member rotatably supported by said stem; a'spring surrounding said stemhaving oneend thereof con*- iiected With the driving member and theop.-`

posite end connected vvithsaid drivenimem ber; a pair of Xed stops .With'vvhich'said driven member is normally heldin'coperai tive relation by said spring so v that said driven member is normally held against ro tation by 'one of said stops, rotation of said arrested iioA l necting said members; said spring being coiled in conical form and being stressed by rotationV of the drivenV member and acting when so stressed to free the driven member from the stop and rotate the driven member.

9. A mechanical movement comprising a driving member; a rotatable driven mem-V ber; a stop normally holdingV the driven.

member against rotary movement; and ai spring connecting said members, said spring normally tending to rotate said driven member Vand being stressed byrotation yof'said driving member and When so vstressed mov- 5 rotatable driving member a rotatable driven member; a sto-p normally holding the driven member against rotary movement; and a coiled sprlng connecting said members, said spring normally tending to rotate said driven member and being shortened in the direction of the axis of its coil by rotation of the driving member, said shortening moving the driven member along its own axis to free it from said stop, said spring then acting to rotate said driven member.

HERMAN G. PAPE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

